Warning: Permanently added '10.128.1.122' (ED25519) to the list of known hosts. Setting up swapspace version 1, size = 127995904 bytes [ 60.405759][ T4162] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS executing program executing program [ 165.772647][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.779757][ C0] (detected by 0, t=10502 jiffies, g=5309, q=51) [ 165.786188][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294953709-4294943207), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.799574][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g5309 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.810695][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 165.820762][ C0] rcu: RCU grace-period kthread stack dump: [ 165.826661][ C0] task:rcu_preempt state:R running task stack:26368 pid: 15 ppid: 2 flags:0x00004000 [ 165.837673][ C0] Call Trace: [ 165.840962][ C0] [ 165.843926][ C0] __schedule+0x12c4/0x45b0 [ 165.848473][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 165.854385][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 165.860308][ C0] ? __mod_timer+0xa8e/0xeb0 [ 165.864922][ C0] ? release_firmware_map_entry+0x190/0x190 [ 165.870832][ C0] ? mod_timer_pending+0x20/0x20 [ 165.875792][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 165.881272][ C0] schedule+0x11b/0x1f0 [ 165.885445][ C0] schedule_timeout+0x1b9/0x300 [ 165.890313][ C0] ? console_conditional_schedule+0x40/0x40 [ 165.896227][ C0] ? update_process_times+0x200/0x200 [ 165.901627][ C0] ? prepare_to_swait_event+0x321/0x340 [ 165.907191][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 165.912067][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 165.917280][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 165.922502][ C0] ? rcu_gp_init+0xdae/0x1140 [ 165.927197][ C0] ? rcu_gp_init+0x1140/0x1140 [ 165.931983][ C0] ? finish_swait+0xc5/0x1d0 [ 165.936591][ C0] rcu_gp_kthread+0xa4/0x360 [ 165.941199][ C0] ? _raw_spin_unlock+0x40/0x40 [ 165.946064][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 165.951189][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 165.957106][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 165.962180][ C0] kthread+0x3f6/0x4f0 [ 165.966277][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 165.971441][ C0] ? kthread_blkcg+0xd0/0xd0 [ 165.976058][ C0] ret_from_fork+0x1f/0x30 [ 165.980517][ C0] [ 165.983548][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 165.989876][ C0] NMI backtrace for cpu 0 [ 165.994228][ C0] CPU: 0 PID: 4192 Comm: syz-executor260 Not tainted 5.15.179-syzkaller #0 [ 166.002914][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 166.013065][ C0] Call Trace: [ 166.016356][ C0] [ 166.019233][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 166.024630][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 166.030281][ C0] ? panic+0x860/0x860 [ 166.034470][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 166.039429][ C0] ? __wake_up_klogd+0xd5/0x100 [ 166.044302][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 166.050474][ C0] ? _printk+0xd1/0x120 [ 166.054648][ C0] ? cpu_online+0x1f/0x40 [ 166.058999][ C0] ? panic+0x860/0x860 [ 166.063089][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 166.069172][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 166.075184][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 166.081386][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 166.086879][ C0] ? print_cpu_stall+0x600/0x600 [ 166.091844][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 166.097071][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 166.102293][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 166.107169][ C0] ? hrtimer_run_queues+0x163/0x450 [ 166.112389][ C0] ? account_process_tick+0x232/0x3a0 [ 166.117872][ C0] update_process_times+0x196/0x200 [ 166.123091][ C0] tick_sched_timer+0x386/0x550 [ 166.128119][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 166.133702][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 166.138950][ C0] ? hrtimer_interrupt+0x980/0x980 [ 166.144167][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 166.150268][ C0] hrtimer_interrupt+0x392/0x980 [ 166.155413][ C0] __sysvec_apic_timer_interrupt+0x13b/0x4b0 [ 166.161412][ C0] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 166.167159][ C0] [ 166.170095][ C0] [ 166.173070][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 166.179074][ C0] RIP: 0010:lock_acquire+0x252/0x4f0 [ 166.184375][ C0] Code: 2b 00 74 08 4c 89 f7 e8 0c ac 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 [ 166.204000][ C0] RSP: 0018:ffffc90002eaf840 EFLAGS: 00000206 [ 166.210084][ C0] RAX: 0000000000000001 RBX: 1ffff920005d5f14 RCX: ffffffff81639d52 [ 166.218070][ C0] RDX: dffffc0000000000 RSI: ffffffff8aab3d00 RDI: ffffffff8af9fa80 [ 166.226061][ C0] RBP: ffffc90002eaf998 R08: dffffc0000000000 R09: fffffbfff2131e1f [ 166.234059][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005d5f10 [ 166.242046][ C0] R13: dffffc0000000000 R14: ffffc90002eaf8a0 R15: 0000000000000246 [ 166.250048][ C0] ? validate_chain+0x112/0x5930 [ 166.255023][ C0] ? read_lock_is_recursive+0x10/0x10 [ 166.260526][ C0] ? __might_sleep+0xc0/0xc0 [ 166.265185][ C0] ? __local_bh_enable_ip+0x164/0x1f0 [ 166.270600][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 166.275826][ C0] ? __local_bh_enable_ip+0x164/0x1f0 [ 166.281216][ C0] ? __bpf_trace_softirq+0x10/0x10 [ 166.286349][ C0] ? local_bh_enable+0x5/0x20 [ 166.291042][ C0] ? _local_bh_enable+0xa0/0xa0 [ 166.295913][ C0] __might_fault+0xb4/0x110 [ 166.300437][ C0] ? __might_fault+0x91/0x110 [ 166.305142][ C0] copy_fpstate_to_sigframe+0x858/0xb40 [ 166.310722][ C0] ? fpregs_set+0x700/0x700 [ 166.315246][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 166.320283][ C0] ? rcu_is_watching+0x11/0xa0 [ 166.325063][ C0] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 166.331240][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 166.336471][ C0] ? rcu_is_watching+0x11/0xa0 [ 166.341250][ C0] ? fpu__alloc_mathframe+0x80/0x140 [ 166.346556][ C0] get_sigframe+0x378/0x4b0 [ 166.351195][ C0] ? restore_sigcontext+0x710/0x710 [ 166.356443][ C0] arch_do_signal_or_restart+0x4ac/0x1890 [ 166.362189][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 166.368718][ C0] ? __might_fault+0xb4/0x110 [ 166.373417][ C0] ? _copy_from_user+0x10f/0x170 [ 166.378483][ C0] ? get_sigframe_size+0x10/0x10 [ 166.383442][ C0] ? __ia32_sys_sigaltstack+0x60/0x60 [ 166.388851][ C0] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 166.394335][ C0] ? exit_to_user_mode_loop+0x39/0x130 [ 166.399904][ C0] exit_to_user_mode_loop+0x97/0x130 [ 166.405307][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 166.410871][ C0] syscall_exit_to_user_mode+0x5d/0x240 [ 166.416442][ C0] do_syscall_64+0x47/0xb0 [ 166.420888][ C0] ? clear_bhb_loop+0x15/0x70 [ 166.425583][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 166.431539][ C0] RIP: 0033:0x7fd1f6e3c14a [ 166.436007][ C0] Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 73 69 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 d3 69 02 00 8b 44 24 [ 166.455646][ C0] RSP: 002b:00007ffc90429f60 EFLAGS: 00000293 [ 166.461744][ C0] RAX: fffffffffffffff7 RBX: 0000000000000004 RCX: 00007fd1f6e3c14a [ 166.469738][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 166.477724][ C0] RBP: 0000000000000000 R08: 00007fd1f6df4990 R09: 00007fd1f6df4990 [ 166.485799][ C0] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd1f6e93e3c [ 166.493796][ C0] R13: 00007fd1f6e8d14e R14: 00007ffc90429fb0 R15: 0000000000000000 [ 166.501802][ C0]